Improvement in earth-augers



2 Sheets--Sheet1.

H. B. STUUFFER.

Earth Angers.

No. 134,324. Patented neci24, 1872.

WITNESSES.

v m W AM FHUTU'LITHOGEAPH/C CUJV-RYUSBUENEI} I'WOCESS.) I

HIRAM O. STOUFFER, OF OANFIELD, OHIO.

IMPROVEMENT IN EARTH-AUGERS.

Specification forming part of Letters Patent No. 1134, 32d, datedDecember 24, 1872.

To all whom it may concern:

Be it known that I, HIRAM G. STOUFFER, of Oanfield, in the county ofMahoning and State of Ohio, have invented a new and valuable Improvementin Earth-Angers; and I do hereby declare that the following is a full,clear, and exact description of the construction and operation of thesame, reference be in g had to the annexed drawing making a part of thisspecification, and to the letters and figures of reference markedthereon.

Figure 1 of the drawing is a representation of a bottom view of myinvention. Fig. 2 is a side view of the same. Fig. 3 is a side viewtaken at right angles with Fig. 2.

This invention has relation to earth-augers; and consists inconstructing the same of a strip or strips of steel or other metaltwisted spirally from the auger-point upward and provided with beveledcutting-edges, substantially as hereinafter described.

In the drawing, A designates a yoke or bifurcated shank, each leg ofwhich holds a segmental arm, 13, curving spirally in the directionshown, and constituting the top bands of the auger. At the junction ofthe arms B with the yoke A the spiral strip is secured by riveting orotherwise. The strip is designed to be made of steel and of uniformwidth its entire length. The auger-point occurs at the S- shaped bend Eformed at the middle of the strip, from which point the strip is carriedupward in the form of two similar and gradually-increasing spiral coils,F. The surfaces of these coils gradually change from a horizontal to avertical position as they ascend. G designates flanged L-shapcd cuttershaving projecting cutting-edges 9. One cutter is attached to each coil.H designates a twisted conical stud constituting the auger-point. Theoutwardly-facin g edges of the coils are beveled so that they may cutinto the earth easily.

The auger is driven into the earth by boring. The earth cut awaycollects inside the coils and is removed by raising the auger, whichforms a bucket for this purpose.

What I claim as my invention, and desire to secure by Letters Patent,is-

The improved earth-auger, composed of the spiral coils F connected atthe point, substantially as specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

HIRAM G. STOUFFER.

Witn esses FRED. W. BEARDSLEY, H. B. BRAINARD.

